Armor plate for flying machines



A. H. G. FOKKER. ARMo'RLATl-i FOR FLYING MACHINES.

" AUPLICATION FILED JUNE 2,1921.

Y Pad hoot. 24; 1922;

. the Netherlands,

p Netherlands, have Patent-ed @et 24, 4i922.

ANTHONY HERMAN GERARD FKKER, F AMSTERDAM, NETHERLANDS.

ARMOR :PLATE FOR LYING MACHINES'. Y

Y Application led June t2,

To all 'whom it may cow/cem.' A 'Y Be it known that I, ANTHONY HERMAN' GERARD FOKKER, a subject Aof the Queen of y which the following is a specification.

This invention relates to improvements in armorprotectors for'the motorsand radia tors and other apparatus of flying machines, as well as the persons in such machines, against rifle and machine gun fire, the object ofthe Vinvention being to provide van improved armor protector which rotates with the propeller to protect the end of the machine at which the propeller is located,

and to also create a blast of air which is driven into and through the radiator or cooler of the motor to enable the same to function normally in spite 'of the armor protecting plate, and prevent overheating of the motor cylinders.

Vith the above and other objects in view, the invention consists in the construction, combination and arrangement of ,devices hereinafter described and claimed.

In the accompanying dra-wings:`

F ig. l is a perspective view of a portion of an aeroplane provided with an armor protector constructed and arranged in accordance with my invention.

' F ig. 2 is a detail rear elevation peller, armor plate and fan.

Fig. 3 is a detail sectional view of the same on the plane indicated by the'line 3;;3 of Fio'. 2.

ForD the purposes of this specification, the front end of an aeroplane is indicated at l, the usual radiatorrcooler at 2, the propeller at 3, and thel propeller shaft at 1l. In accord .ance with my invention, I provide an armor 5 which as here shown comprises a plate 6, circular in form, and arranged on the center of the propeller and spaced from the cooler or radiator, and `also comprises a concavoconvex shield 7 `which is arranged on the front side of the plate 6.1`Within the scope of my-invention the armor may be of any of` the proresiding at lAmsterdam, f invented a new and use-- ful Armor Plate for Flying Machines, of

1921. serial No. 474,466.

suitable construction. I also provide a fan or blower which as here shown comprises a seriesof-vanes or blades 8 ofsuitable form, which are secured on the sid'eof the plate (5 opposed tothe cooler. I

VThearmor rotates with the propellerand the'blower or fan also rotates therewith and forces strongblasts of air into and-through the radiator or cooler, thereby greatlyincreasing the eiciency of the radiator or cooler in preventing the motor cylinders from becoming overheated. The armor also serves effectually to protect the end of the machine at which it is arranged, and to also .protect the occupants of the machine from riiie and machine gun fire, and also against shrapnel and shell.

My improved devices can also be' attached togiying machines provided with a rear propeller, and in this case' the blades or vanes of the fan'are shaped and arran ed in such manner as to cause them to pro uce 'a suction action.

Having thus described my invention, I claim Y l.. In a flying machine, L 9001er, a propel- .ler contiguous to and spaced. rom the cooler, and, an armor plate and fan arranged for rotation with the propeller and also ar- 'ranged contiguous to the cooler to force air against the cooler.

2. In a ying machine, acooler, a. propellerl contiguous to'and spaced' from the cooler, fan armor plate arranged for rotation with the propeller, and an blades secured to the armor plate and arranged to force air against the cooler. Y

3.. In a flying machine, a; propeller, van varmor plate arranged for rotation with the propeller, and a fan behind the armor plate and alsov arranged for rotation with the propeller.

Intestimony whereof I ax my signature -in presence of two witnesses.

ANTHONY HERMAN GERARD FOKKER. Witnesses: A .Y

Ro'r. N. MooRDUP, F. ArME. 

